Catalytic Iron Filter (CIF) is a filter for removal of high loads of Hydrogen Sulphide (H2S) from the foul air and is often used as a roughing filter for the first stage of a system with a carbon filter installed as a polishing unit. It essentially protects and limits the load to the polishing media thereby extending the life span of the media and reducing operational costs.
Advantages of the CIF stage are that no chemicals are required, low water consumption and improved performance at the second stage.??They often have a small footprint and can be installed outdoors.
The foul inlet air is first passed through a small humidifier to moisten the air stream and then passes into the top of the CIF tower. The airflow